Rail anchorage for head-free rail joints



D March 30 v. c. ARMSTRONG RAIL ANCHORAGE FOR HEAD FREE RAIL JOINTS aFiled Nov. 5, 1925 7 19 \g fllllf" I Patented Mar. 30,. 192.6.

UNITED STATES PAT T OFFICE.

VICTOR C. ARMSTRONG, OF HACKENSAC K, NEW JERSEY, ASSIGNOR TO THIE RAILJoI'Nr COMPANY, or NEW RAIL ANCHORAGE F03 HEAD-FREE R AIL JOINTS.

YORK, N."Y.,' A oonronerron or NEW YORK.

Application filed November 3, 1925. Serial No. 66,593.

To all whom it may concern: V Be it known that I, Vro'ron C. ARMsTnoNc,citizen of the United States, residing at Hackennck, in the county ofBergen and State of New Jersey, have invented certain new and usefulImprovements in Rail Anchorage for Head-Free Rail Joints, of which thefollowing is a specificationl This invention relates to an improvementin rail joint structures of the so-called headfree type wherein thejoint bar has a bear ing in and at-the head fillet of the bar.

A feature of practical importance in the head free type of rail joint isto provide a structural formation wherein vthe head of the bar is sorelated to the web and head fillet of the rail itself as to provide foran anchorage that gives the head of the bar clearance from the undersideof the rail head and a loading engagement at the head fillet of therail. Such an anchorage for the inner head projection of a rail jointbar has been found most effectively to assimilate the loadinganddeflectionfforces to which a rail joint is subjected, and to bringthe head of the bar into solid resistance to load deflections. It is thepurpose of the present invention to insure the maintenance of thisrelation of the joint bar to the rail head fillet under the mostexacting conditions of load and Wear to which the rail joint issubjected. 'Also, the invention provides an improvement whichcompensates for wear that may occur due to concentrating the loading anddeflecting forces at the head fillets of the railthus tending topreserve the life and. strength of the Tail.

' With these and other objects in view.

whic will more readily appear to those fami iar with the art, theinvention consists in the novel structural formation, and the relationof parts, hereinafter particularly described and clalmed.

Though 'susceptibleof structural modification without departing from thespirit or scope of the invention a preferred and practical embodimentthereof is shown in the accompanying drawings, in which Figure 1 is asectional view'of one side-of a rail joint showing the improvement inthe structure of the rail and the relation ofrail to the head of therail joint bar.

a head-free joint bar thereto. 7

Figure 2 is a detail view showing a modification illustrating a changein form, whic-h may be resorted to in the rolling operation orspecialrail sections known to this appliinorder to obtain the modified railfillet formation.

Referring to the exemplication of the invention shownin the drawings,the numeral 1 designates the rail having the head 2, the web 3 and thefoot flange portion 4, and it I is the purpose-of the present inventionto improve the rail structure at the head fillet thereof in order tobetter carry forward the practical features of a head-free rail joint ofthe type disclosed in the reissue patent of Thomson No. 15,773, grantedFebruary 19, 1924.

To obtain; the desired result it is to be observed that the presentinvention 'con-' templates an alteration or modification in the railstructure at the head fillet portion thereof in order to provide at'that point an arcuate outward extension 50f the rail head fillet. Thisarcuate outward extension 5 repref ents a definite and substantialthickening of the rail head fillet on an entirely different and largerradius than the radii of the head fillets of any of the standard cant.In the figures 'of the drawings the conventional outline of the standardrail head fillets is indicated by dotted lines and by contrast betweenthe old outline and the special radius of the, outward extension 5, itis to be notedthat this-outward extension forms a thickened sockethaving therounded or curved bearing surface 6 with which snuglyregisters the surface 7 of the rounded bearing ball-8 forming theinnerrhead pro '90 ection of the head 9 of a rail joint bar 1.0 of. thehead-free type. s

The construction described makes a thickened socket especially adaptedto receive theinner head projection of a headfree joint bar so as toprovide a secure anchorage while freely admitting of the rotativemovement of the bar either when tightened by the boltsor under the loadimposed on the rail head, and, in addition 1 to carryingrforward in apractical way those desirable'featuresof'a head-free rail joint, theconstruction described provides a substantial abnormal body of-metal tocompensate for wear at the point'where the loading and deflecting forcesare passed from the The thickened anchoragesocketsor pro-- jectionsdisposed at-the head fillets of the rail may be rolled in differentforms without 10 changing the purpose or intent of the invention as forinstance, in Figure 1 of the drawings there is shown an enlargementrolled at the head fillet of a rail, which enlargement merges evenlyinto the surface .of the web of the rail, and with but a slight ofisetas at 11 into the underside of the rail head,

where there is a clearance between the latter and the head of the bar.Or,.as shown in Fig. 2 of the drawings the outwardextension or socketprojecton which provides for a larger-body of metal at-the head filletof the rail may be in the form suggested in Fig. 2 of the drawings,wher'einslight ofi'sets at both the upper and lower edges of theprojecting metal are formed, in the operation of rolling. And, in factany minor changes in the form or proportion 'of the projecting metal andthe contour at the edges where it joins respectively the rail web andthe rail head may be resorted to head fillets and the outer edge thereofat the ofi'set'll isprefer'ablydisposed below and at a lesser angle tothe horizontal than. the standard fishing angle of the rail head so asto more nearly lie in a horizontal plane at that point. The effect ofthis 'detail is to assist in better holding the head of the bar to itsanchorage inlthe socket 5, maintaining it firmly in its bearing seatwhen rotated therein under the influence of tightening the bolts. I v ftwill be noted from the foregoing that thei'improvement descfribed notonly provides an improved anchorage for the head of a bar fitting therail head fillet but also provides 'a structure which materiallystrengthens the fillets thereof and compensates for any increase in wearthat may occur at those points of the loading. and deflection forcesbeing directed through the head fillets; and the I improvement is'applicableto any type of v rail.

Without further description it" is thought that the features andadvantages of the invention will be readily apparent to those skilled inthe art, and it will of course be understood that changes in the form,proportion and minor details of construction may be resorted to, withoutdeparting from the spirit of the invention andscope of the appendedclaims.

I claim 1. A head-free rail joint structure including a rail provided atits head fillet with an abnormal projection of metal formed with arounded bearing surface, and the joint bar having its inner headprojection engaging said bearing surface. 2

2. A head-freerail joint structure including a rail provided at its headfillet with an abnormal projection ofmetal formed with a rounded bearingsurface of greater surface area than the standard head fillets, and thejoint-bar having its inner head projection engaging saidbearing surface.

3. A headfree rail joint structure including a joint bar formed with arounded bearing surface at the inner side of its head and the railprovided at its head filletwith an. abnormal projection of metal formedwith a rounded bearing surface Whose upper edge is disposed below and ata lesser angle to the horizontal than the standardfishing angle of theunder-surface of the rail head. In testimony whereof I hereunto afiizimy signature.

VICTOR c. ARMSTRONG.

